Age Calculator — Date Calculator
Date & TimeAge Calculator is a date tool that calculates age and days lived from a birth date.
What is it
Age Calculator uses browser date calculations to produce the result. It helps with repeated date checks such as day gaps, events, and weekdays.
age = current year - birth year - birthday adjustment
How to use
- 1Enter the date.
- 2Press calculate.
- 3Check the result and reference date.
Reference
| Input | Result |
|---|---|
| 2026-12-31 | calculates age and days lived from a birth date |
Sources & standards
- ECMAScript Language Specification - Ecma International
FAQ
What timezone does Age Calculator use?
It uses your browser’s local timezone for date calculations.
Is Age Calculator input sent to a server?
No. This tool runs in your browser and does not send input to a server.